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Do You Need a Prescription for Viagra?
Viagra, or sildenafil, was the first oral pill approved by the FDA to treat erectile dysfunction. Pfizer released Viagra in 1998 and, since then, generic versions of the drug have become available, too. To get more news about 威而鋼哪裡買, you can visit our official website.
Viagra, along with other ED medications such as Cialis (tadalafil) and Levitra (vardenafil), functions as a phosphodiesterase 5 (PDE5) inhibitor. PDE5 inhibitors increase blood flow to the penis by causing the blood vessels in penile tissue to relax.
This increased blood flow makes it easier for people to get and maintain an erection with sexual stimulation. (Note that ED medication doesn’t cause spontaneous erections without stimulation — so don’t worry, you’re not at risk of getting an erection on, say, the subway.)
Potential drug interactions with Viagra
When you get a prescription for Viagra, your healthcare provider will ask whether you’re taking any other medications. It’s important to be honest about your other prescriptions, so your doctor can give you the best advice about taking Viagra.
Viagra shouldn’t be used with medications that lower blood pressure, particularly nitrates — nitrates are an absolute contraindication to PDE5 inhibitors like Viagra. People who are taking nitrates cannot, under any circumstances, use ED medication.
Alpha blockers, antihypertensives, and riociguat can be taken with Viagra, but only under supervision because there are some specifics about how to take the medications together.
Antibiotics, antifungals, and HIV protease inhibitor drugs are all processed in the liver, just like Viagra. That means they can increase the amount of Viagra in your body, which can cause unwanted side effects. The dose of Viagra would need to be adjusted with this in mind.
And what about drugs that decrease the effect of Viagra on your erections? Anticonvulsants (like phenytoin or carbamazepine) and an antibiotic called rifampin can all cause Viagra to not do its job.
A final heads up on interactions: Alcohol and grapefruit juice can also increase the likelihood that you’ll experience Viagra side effects.
How Much Does Viagra Cost?
Viagra is a commonly-used medication to treat erectile dysfunction. We break down the prices of the different brands and the available purchasing options.To get more news about 威而鋼哪裡買, you can visit our official website.
Viagra, otherwise known by its generic name sildenafil, is the best-known medication for treating erectile dysfunction (ED). It’s a common vasodilator that’s also used to treat pulmonary arterial hypertension.
The drug was patented in 1996 and approved for ED by the Food and Drug Administration (FDA) in March 1998. It was the first oral treatment approved to treat ED in the United States.
ED affects as many as 30 million men, according to the Urology Care Foundation.
The rate of ED increases with age. According to 2006 researchTrusted Source, ED occurs in 40 percent of men ages 40 or older, and that number increases to almost 70 percent in men 70 and up. But it’s not exclusive to those 40 and up. One study from 2013 found that 1 in 4 participants under the age of 40 experienced ED.
In the United States, you’ll need a prescription for both name-brand Viagra and generic sildenafil. Costs for both vary.While Viagra may be the most well-known drug to treat ED, there are several others available as well. We break down the costs for Viagra and where you can purchase it below.
Who Viagra is designed for
Viagra is for anyone assigned male at birth who has frequent difficulty achieving or maintaining an erection long enough for a satisfying sexual encounter.
It’s important to note that erectile dysfunction can happen from time to time, even in young people, but if it occurs several times in a week and repeatedly over the course of 3 or more weeks, Viagra might be worth considering.
It’s also important to take your sexual lifestyle into account when considering ED medication. Viagra works on an “as-needed” basis and shouldn’t be taken as a daily pill.
Since it only works for a period of time after you take it, Viagra is best for someone who can plan out their sexual encounters — especially since Viagra can take some time to take full effect. It isn’t ideal for someone who often has sexual encounters spontaneously and who isn’t able to easily wait for the pill to take effect.